11
•Remove the Activated Carbon Filter
Housing and empty. Remove the wrapping
and install the Activated Carbon Post Filter.
Firmly tighten the Housing hand tight only.
•Disconnect the yellow product water tubing
that runs from the Holding Tank to the Tee
(see Fig. 1, page 1). Put 50 drops of bleach
(this is ½ tsp. or 3 ml) into the tubing and
reconnect it to the Tee.
NOTE: Now is the convenient time to
change the In–Line Activated Carbon Post
Filter, see Sec. V, C.1–6, page 11.
•Slowly open the Feed Water Saddle Valve.
When water begins dripping out of the
Dispensing Faucet, in the following order,
close the Faucet and then open the Holding
Tank Valve.
•Do not open the Faucet for at least 6 hours.
•Discard the first three full tanks of water
produced, they will contain chlorine.
C. Changing the In–Line Activated Carbon Post
Filter
1. Close the Feed Water Saddle Valve by turning
fully clockwise.
2. Close the Holding Tank Valve and then open
the Dispensing Faucet to release the pressure.
3. Remove the In–Line Activated Carbon Post
Filter. Disconnect the used Post Filter by
pressing in the connector’s collar and at the
same time pulling the tube out of the fitting.
Unscrew the fittings on the In–Line, re–Teflon
tape them and install them on the new Post
Filter. Do not over tighten the fittings.
4. Firmly reconnect the polytubes to the new
Post Filter. (Refer to Fig. 5 above.)
5. Slowly open the Feed Water Saddle Valve.
6. When water begins dripping out of the Faucet,
in the following order, close the Faucet and
open the Holding Tank Valve. When the
Faucet is first opened, expect air and carbon
fines (very fine black powder), from the new
Post Filter to be rinsed out. This is normal for
the first tank of water.
IN–LINE ACTIVATED CARBON
POST FILTER ASSEMBLY
OUT
IN
In-Line Activated
Carbon Post Filter
3/8" Blue
Polytube
Connector
Polytube
Connector
To
Dispensing
Faucet
3/8" Blue
Figure 5
SECTION VI. TECHNICAL DATA
A. Water Quality
Water quality is normally measured with a special
meter that measures the water’s ability to conduct
electricity. The more dissolved solids in the water,
the higher the conductivity. The results are
usually reported in Parts per Million (ppm) or
Milligrams per Liter (mg/l) of Total Dissolved
Solids (TDS). (Although technically they are not
exactly equal, in most discussions ppm = mg/l.)
R.O. Membranes are rated by the amount of
dissolved solids that are rejected. This rating is a
ratio of the TDS in the feed water to the TDS in
the product water and is reported as Percent
Rejection. If the feed water contained 100 ppm of
TDS and the product water contained 10 ppm of
TDS, 90 ppm have been rejected and the reject
ratio is 90%.
Percent Rejection =
Feed TDS–Product TDS x 100%
Feed TDS
EXAMPLE: Feed water is 500 ppm TDS and the
product water is 75 ppm TDS.
Percent Rejection = 500 – 75 x 100%
500
Percent Rejection = 0.85 x 100% or 85%
